| Event | 2012 Chester - Half Marathon |
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| Name | JOHN O'BRIEN | Club | Race Number | 3851 | Date | 13/05/2012 | |
| Gender | Male | Gender Position | 864 of 2262 | Category | M40 | Category Position | 150 of 371 |
| 6 Miles | 00:48:11 | Stage Position | 908 |
| Gun Time | 01:49:03 | Overall Position | 986 |
| Chip Time | 01:46:23 | Chip Position | 923 |